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Horiyama S, Hayama N, Yoneyama H, Usami Y, Haginaka J. Identification of novel metabolites of abiraterone in human serum and their metabolic pathways. ANAL SCI 2024; 40:67-74. [PMID: 37831314 DOI: 10.1007/s44211-023-00431-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Accepted: 09/20/2023] [Indexed: 10/14/2023]
Abstract
Two novel abiraterone (Abi, 3β-OH-Abi) metabolites in human serum were identified as 3α-OH-Abi and Δ5-Abi (D5A). Both metabolites were confirmed by their retention times on LC/MS and their product-ion mass spectra on LC-MS/MS compared to those of authentic compounds, which were chemically synthesized. The plausible metabolic pathways of these two metabolites are as follows: Abi is first oxidized to D5A by 3β-hydroxysteroid dehydrogenase (3β-HSD) and then irreversibly converted to Δ4-Abi (D4A) by ∆5-∆4 isomerase. Presumably, D5A detection is difficult because of its rapid conversion to D4A and its low concentration in serum samples. In contrast, the low concentration 3α-OH-Abi was generated by reducing the remaining D5A using 3α-hydroxysteroid dehydrogenase (3α-HSD).
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Affiliation(s)
- Shizuyo Horiyama
- School of Pharmacy and Pharmaceutical Sciences, Mukogawa Women's University, 11-68, Koshien Kyuban-Cho, Nishinomiya, 663-8179, Japan.
| | - Noboru Hayama
- Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, 4-20-1 Nasahara, Takatsuki, Osaka, 569-1094, Japan.
| | - Hiroki Yoneyama
- Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, 4-20-1 Nasahara, Takatsuki, Osaka, 569-1094, Japan
| | - Yoshihide Usami
- Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, 4-20-1 Nasahara, Takatsuki, Osaka, 569-1094, Japan
| | - Jun Haginaka
- Institute for Biosciences, Mukogawa Women's University, 11-68, Koshien Kyuban-Cho, Nishinomiya, 663-8179, Japan
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2
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Uemura M, Hiramoto K, Yoneyama H, Harusawa S, Komeda S. Introduction of Fluorine into Antitumor-Active Dinuclear Platinum(II) Complexes Leads to Modulation of In Vivo Antitumor Activity in Mice. Inorg Chem 2022; 61:12155-12164. [PMID: 35876345 DOI: 10.1021/acs.inorgchem.2c01126] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Tetrazolato-bridged dinuclear platinum(II) complexes ([{cis-Pt(NH3)2}2(μ-OH)(μ-5-R-tetrazolato-N2,N3)]2+; tetrazolato-bridged complexes) show remarkable cytotoxic effects in vitro and antitumor activity in vivo. Here, we examined the structure-activity relationship of a series of fluorine-containing derivatives (R = CFH2, CF2H, or CF3), focusing on their lipophilicity, cellular accumulation, cytotoxicity, interactions with a nucleobase and double-stranded deoxyribonucleic acid, and in vivo antitumor efficacy. Fluorination had a little effect on the properties of the derivatives in vitro; however, marked differences in in vitro cytotoxicity and in vivo tumor growth inhibition activity were observed. In BALB/c mice bearing colon-26 tumors, the antitumor efficacies of the derivatives were markedly altered, even by changing the number of fluorine atoms by one. In addition, one derivative, [{cis-Pt(NH3)2}2(μ-OH)(μ-5-difluoromethyltetrazolato-N2,N3)](NO3)2, showed a significantly higher antitumor efficacy compared with oxaliplatin, a current first-line drug and the only platinum-based drug approved for the treatment of colon cancer. Together, the present results indicate that introducing fluorine into tetrazolato-bridged complexes may be useful for modulating in vivo activities.
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Affiliation(s)
- Masako Uemura
- Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka, Mie 513-8670, Japan
| | - Keiichi Hiramoto
- Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka, Mie 513-8670, Japan
| | - Hiroki Yoneyama
- Faculty of Pharmaceutical Sciences, Osaka Medical and Pharmaceutical University, Osaka 569-1094, Japan
| | - Shinya Harusawa
- Faculty of Pharmaceutical Sciences, Osaka Medical and Pharmaceutical University, Osaka 569-1094, Japan
| | - Seiji Komeda
- Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka, Mie 513-8670, Japan
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Usami Y, Nakamura K, Mizobuchi Y, Mizuki K, Harusawa S, Yoneyama H, Yamada T. Enantiomeric composition of natural pericosine A derived from Periconia byssoides and α-glycosidase inhibitory activity of (-)-enantiomer. Chirality 2022; 34:1320-1327. [PMID: 35775430 DOI: 10.1002/chir.23491] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 05/26/2022] [Accepted: 06/16/2022] [Indexed: 01/12/2023]
Abstract
Chiral high-performance liquid chromatography (HPLC) analysis of natural pericosine A, which appeared in literature first in 1977, from Periconia byssoides was conducted using a column CHIRALPAK® AD-H to determine the enantiomeric composition of the original mixture which was found to be 68: 32 mixtures of (+)- and (-)-enantiomer, respectively. Furthermore, two independently isolated samples of pericosine A from the same fungus were also analyzed to show the two peaks in the HPLC charts at approximate 1:1 ratio. These results concluded that pericosine A derived from Periconia byssoides was indeed an enantiomeric mixture. Synthesized enantiomers were subjected to evaluation of antitumor activity against three kinds of tumor cells (p388, L1210, HL-60), indicating moderate cytotoxicity against all three kinds of tumor cell lines, but significant difference in potency between the enantiomers was not observed. In contrast, when both the enantiomers of pericosine A were evaluated against five kinds of glycosidases-inhibitory activities (α- and β-glucosidases, α- and β-galactosidases, and α-mannosidase), an apparent difference on anti-glycosidase assay was found between the enantiomers: (-)-pericosine A inhibited α-glucosidase at IC50 : 2.25 mM, and β-galactosidase at IC50 : 5.38 mM, albeit the (+)-enantiomer showed inactivity against these five enzymes.
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Affiliation(s)
- Yoshihide Usami
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences (Renamed as Osaka Medical and Pharmaceutical University in April 2021), Osaka, Japan
| | - Kimika Nakamura
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences (Renamed as Osaka Medical and Pharmaceutical University in April 2021), Osaka, Japan
| | - Yoshino Mizobuchi
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences (Renamed as Osaka Medical and Pharmaceutical University in April 2021), Osaka, Japan
| | - Koji Mizuki
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences (Renamed as Osaka Medical and Pharmaceutical University in April 2021), Osaka, Japan
| | - Shinya Harusawa
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences (Renamed as Osaka Medical and Pharmaceutical University in April 2021), Osaka, Japan
| | - Hiroki Yoneyama
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences (Renamed as Osaka Medical and Pharmaceutical University in April 2021), Osaka, Japan
| | - Takeshi Yamada
- Department of Medicinal Molecular Chemistry, Osaka University of Pharmaceutical Sciences, Osaka, Japan
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Yoneyama H, Hosohata K, Jin D, Yoshida I, Toyoda M, Kitamura I, Takai S, Usami Y. Design, synthesis, and evaluation of new vanin-1 inhibitors based on RR6. Bioorg Med Chem 2022; 65:116791. [PMID: 35537325 DOI: 10.1016/j.bmc.2022.116791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 04/26/2022] [Accepted: 04/29/2022] [Indexed: 11/25/2022]
Abstract
Fourteen novel vanin-1 inhibitors coded OMP-# were designed from RR6 and successfully synthesized by a nucleophilic addition-elimination reaction of the pantetheinic acid-derived Weinreb amide as a key step under Barbier conditions. The synthesized OMP compounds exhibited inhibitory activity against human serum vanin-1 in vitro. Among the synthesized compounds, OMP-7, which possesses a trifluoromethoxy group at the para-position on the phenyl ring, exhibited the most potent activity, approximately 20 times that of the mother compound RR6. OMP-7 was further subjected to an in vivo assay using a normal hamster. More potent activity was observed than that of RR6 against both serum and renal vanin-1. The activity lasted for 4 h after injection against serum vanin-1 and 1 h after injection against renal vanin-1, whereas RR6 did not show the desired activity.
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Affiliation(s)
- Hiroki Yoneyama
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, 4-20-1Nasahara, Takatsuki City, Osaka 569-1094, Japan
| | - Keiko Hosohata
- Education and Research Center of Clinical Pharmacy, Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, 4-20-1Nasahara, Takatsuki City, Osaka 569-1094, Japan
| | - Denan Jin
- Department of Innovative Medicine, Graduate School of Medicine, Osaka Medical and Pharmaceutical University, 2-7 Daigaku-machi, Takatsuki City, Osaka 569-8686, Japan
| | - Iroha Yoshida
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, 4-20-1Nasahara, Takatsuki City, Osaka 569-1094, Japan
| | - Miyui Toyoda
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, 4-20-1Nasahara, Takatsuki City, Osaka 569-1094, Japan
| | - Ikuko Kitamura
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, 4-20-1Nasahara, Takatsuki City, Osaka 569-1094, Japan
| | - Shinji Takai
- Department of Innovative Medicine, Graduate School of Medicine, Osaka Medical and Pharmaceutical University, 2-7 Daigaku-machi, Takatsuki City, Osaka 569-8686, Japan
| | - Yoshihide Usami
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, 4-20-1Nasahara, Takatsuki City, Osaka 569-1094, Japan.
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Usami Y, Mizobuchi Y, Ijuin M, Yamada T, Morita M, Mizuki K, Yoneyama H, Harusawa S. Synthesis of 6-Halo-Substituted Pericosine A and an Evaluation of Their Antitumor and Antiglycosidase Activities. Mar Drugs 2022; 20:md20070438. [PMID: 35877731 PMCID: PMC9323573 DOI: 10.3390/md20070438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 06/25/2022] [Accepted: 06/28/2022] [Indexed: 11/16/2022] Open
Abstract
The enantiomers of 6-fluoro-, 6-bromo-, and 6-iodopericosine A were synthesized. An efficient synthesis of both enantiomers of pericoxide via 6-bromopericosine A was also developed. These 6-halo-substituted pericosine A derivatives were evaluated in terms of their antitumor activity against three types of tumor cells (p388, L1210, and HL-60) and glycosidase inhibitory activity. The bromo- and iodo-congeners exhibited moderate antitumor activity similar to pericosine A against the three types of tumor cell lines studied. The fluorinated compound was less active than the others, including pericosine A. In the antitumor assay, no significant difference in potency between the enantiomers was observed for any of the halogenated compounds. Meanwhile, the (−)-6-fluoro- and (−)-6-bromo-congeners inhibited α-glucosidase to a greater extent than those of their corresponding (+)-enantiomers, whereas (+)-iodopericosine A showed increased activity when compared to its (−)-enantiomer.
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Affiliation(s)
- Yoshihide Usami
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, Nasahara 4-20-1, Takatsuki 569-1094, Osaka, Japan; (Y.M.); (M.I.); (M.M.); (K.M.); (H.Y.); (S.H.)
- Correspondence: ; Tel.: +81-796-90-1087; Fax: +81-796-90-1005
| | - Yoshino Mizobuchi
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, Nasahara 4-20-1, Takatsuki 569-1094, Osaka, Japan; (Y.M.); (M.I.); (M.M.); (K.M.); (H.Y.); (S.H.)
| | - Mai Ijuin
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, Nasahara 4-20-1, Takatsuki 569-1094, Osaka, Japan; (Y.M.); (M.I.); (M.M.); (K.M.); (H.Y.); (S.H.)
| | - Takeshi Yamada
- Department of Medicinal Molecular Chemistry, Osaka University of Pharmaceutical Sciences, Nasahara 4-20-1, Takatsuki 569-1094, Osaka, Japan;
| | - Mizuki Morita
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, Nasahara 4-20-1, Takatsuki 569-1094, Osaka, Japan; (Y.M.); (M.I.); (M.M.); (K.M.); (H.Y.); (S.H.)
| | - Koji Mizuki
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, Nasahara 4-20-1, Takatsuki 569-1094, Osaka, Japan; (Y.M.); (M.I.); (M.M.); (K.M.); (H.Y.); (S.H.)
| | - Hiroki Yoneyama
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, Nasahara 4-20-1, Takatsuki 569-1094, Osaka, Japan; (Y.M.); (M.I.); (M.M.); (K.M.); (H.Y.); (S.H.)
| | - Shinya Harusawa
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, Nasahara 4-20-1, Takatsuki 569-1094, Osaka, Japan; (Y.M.); (M.I.); (M.M.); (K.M.); (H.Y.); (S.H.)
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6
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Komeda S, Yoneyama H, Uemura M, Tsuchiya T, Hoshiyama M, Sakazaki T, Hiramoto K, Harusawa S. Data on synthesis and structure-activity relationships of tetrazolato-bridged dinuclear platinum(II) complexes. Data Brief 2022; 40:107697. [PMID: 34993284 PMCID: PMC8713121 DOI: 10.1016/j.dib.2021.107697] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 12/07/2021] [Accepted: 12/08/2021] [Indexed: 11/29/2022] Open
Abstract
In this data file, the synthetic procedures for the preparation of a series of anticancer tetrazolato-bridged dinuclear platinum(II) complexes ([{cis-Pt(NH3)2}2(μ-OH)(μ-5-R-tetrazolato-N2,N3)]n+ (n = 1 or 2, tetrazolato-bridged complexes)) and of the bridging ligands of 5-substituted 1H-tetrazoles (5-R-1H-tetrazoles) are described. These compounds were characterized by 1H-, 13C-, 19F- and 195Pt-NMR spectroscopy and mass spectrometry.
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Affiliation(s)
- Seiji Komeda
- Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka, Mie 513-8670, Japan
| | - Hiroki Yoneyama
- Department of Pharmaceutical Organic Chemistry, Osaka Medical and Pharmaceutical University, Takatsuki, Osaka 569-1094, Japan
| | - Masako Uemura
- Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka, Mie 513-8670, Japan
| | - Takahiro Tsuchiya
- Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka, Mie 513-8670, Japan
| | - Miyuu Hoshiyama
- Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka, Mie 513-8670, Japan
| | - Tomoya Sakazaki
- Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka, Mie 513-8670, Japan
| | - Keiichi Hiramoto
- Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka, Mie 513-8670, Japan
| | - Shinya Harusawa
- Department of Pharmaceutical Organic Chemistry, Osaka Medical and Pharmaceutical University, Takatsuki, Osaka 569-1094, Japan
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Usami Y, Kubo Y, Takagaki T, Kuroiwa N, Ono J, Nishikawa K, Nakamizu A, Tatsui Y, Harusawa S, Hayama N, Yoneyama H. CuI-Catalyzed Coupling Reactions of 4-Iodopyrazoles and Alcohols: Application toward Withasomnine and Homologs. Molecules 2021; 26:3370. [PMID: 34199652 PMCID: PMC8199780 DOI: 10.3390/molecules26113370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 05/25/2021] [Accepted: 05/31/2021] [Indexed: 12/03/2022] Open
Abstract
The direct 4-alkoxylation of 4-iodo-1H-pyrazoles with alcohols was achieved by a CuI-catalyzed coupling protocol. The optimal reaction conditions employed excess alcohol and potassium t-butoxide (2 equiv) in the presence of CuI (20 mol%) and 3,4,7,8-tetramethyl-1,10-phenanthroline (20 mol%) at 130 °C for 1 h under microwave irradiation. The present method was efficiently applied to the synthesis of withasomnine and its six- and seven-membered cyclic homologs.
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Affiliation(s)
- Yoshihide Usami
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan; (Y.K.); (T.T.); (N.K.); (J.O.); (K.N.); (A.N.); (Y.T.); (S.H.); (N.H.); (H.Y.)
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Yoneyama H, Takatsuji K, Ito A, Usami Y, Harusawa S. Transformation of γ-ketoaldehyde acetals into 3-substituted-2-cyclopentenones via cyanophosphates under mild conditions. Tetrahedron 2021. [DOI: 10.1016/j.tet.2020.131914] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Usami Y, Tatsui Y, Sumimoto K, Miyamoto A, Koito N, Yoneyama H, Harusawa S. 3-Trifluoromethanesulfonyloxy-4,7-dihydropyrazolo[1,5-a]pyridine via Ring-Closing Metathesis: Synthesis and Transformation to Withasomnine Homologs. HETEROCYCLES 2021. [DOI: 10.3987/com-20-s(k)13] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Usami Y, Higuchi M, Mizuki K, Yamamoto M, Kanki M, Nakasone C, Sugimoto Y, Shibano M, Uesawa Y, Nagai J, Yoneyama H, Harusawa S. Syntheses and Glycosidase Inhibitory Activities, and in Silico Docking Studies of Pericosine E Analogs Methoxy-Substituted at C6. Mar Drugs 2020; 18:E221. [PMID: 32326065 PMCID: PMC7230162 DOI: 10.3390/md18040221] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Revised: 04/15/2020] [Accepted: 04/17/2020] [Indexed: 12/14/2022] Open
Abstract
Inspired by the significant -glucosidase inhibitory activities of (+)- and (-)-pericosine E, we herein designed and synthesized 16 analogs of these marine natural products bearing a methoxy group instead of a chlorine atom at C6. Four of these compounds exhibited moderate -glucosidase inhibitory activities, which were weaker than those of the corresponding chlorine-containing species. The four compounds could be prepared by coupling reactions utilizing the (-)-pericosine B moiety. An additional in silico docking simulation suggested that the reason of reduced activity of the C6-methoxylated analogs might be an absence of hydrogen bonding between a methoxy group with the surrounding amino acid residues in the active site in -glucosidase.
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Affiliation(s)
- Yoshihide Usami
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, Nasahara 4-20-1, Takatsuki, Osaka 569-1094, Japan; (M.H.); (K.M.); (M.Y.); (M.K.); (C.N.); (Y.S.); (H.Y.); (S.H.)
| | - Megumi Higuchi
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, Nasahara 4-20-1, Takatsuki, Osaka 569-1094, Japan; (M.H.); (K.M.); (M.Y.); (M.K.); (C.N.); (Y.S.); (H.Y.); (S.H.)
| | - Koji Mizuki
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, Nasahara 4-20-1, Takatsuki, Osaka 569-1094, Japan; (M.H.); (K.M.); (M.Y.); (M.K.); (C.N.); (Y.S.); (H.Y.); (S.H.)
| | - Mizuki Yamamoto
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, Nasahara 4-20-1, Takatsuki, Osaka 569-1094, Japan; (M.H.); (K.M.); (M.Y.); (M.K.); (C.N.); (Y.S.); (H.Y.); (S.H.)
| | - Mao Kanki
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, Nasahara 4-20-1, Takatsuki, Osaka 569-1094, Japan; (M.H.); (K.M.); (M.Y.); (M.K.); (C.N.); (Y.S.); (H.Y.); (S.H.)
| | - Chika Nakasone
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, Nasahara 4-20-1, Takatsuki, Osaka 569-1094, Japan; (M.H.); (K.M.); (M.Y.); (M.K.); (C.N.); (Y.S.); (H.Y.); (S.H.)
| | - Yuya Sugimoto
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, Nasahara 4-20-1, Takatsuki, Osaka 569-1094, Japan; (M.H.); (K.M.); (M.Y.); (M.K.); (C.N.); (Y.S.); (H.Y.); (S.H.)
| | - Makio Shibano
- Department of Natural Products Research, Osaka University of Pharmaceutical Sciences, Nasahara 4-20-1, Takatsuki, Osaka 569-1094, Japan;
| | - Yoshihiro Uesawa
- Department of Medical Molecular Informatics, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo 204-8588, Japan; (Y.U.); (J.N.)
| | - Junko Nagai
- Department of Medical Molecular Informatics, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo 204-8588, Japan; (Y.U.); (J.N.)
| | - Hiroki Yoneyama
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, Nasahara 4-20-1, Takatsuki, Osaka 569-1094, Japan; (M.H.); (K.M.); (M.Y.); (M.K.); (C.N.); (Y.S.); (H.Y.); (S.H.)
| | - Shinya Harusawa
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, Nasahara 4-20-1, Takatsuki, Osaka 569-1094, Japan; (M.H.); (K.M.); (M.Y.); (M.K.); (C.N.); (Y.S.); (H.Y.); (S.H.)
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11
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Usami Y, Tsujiuchi Y, Machiya Y, Chiba A, Ikawa T, Yoneyama H, Harusawa S. Synthetic Challenges in the Construction of 8- to 10-Membered Pyrazole-Fused Rings via Ring-Closing Metathesis. HETEROCYCLES 2020. [DOI: 10.3987/com-19-s(f)32] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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12
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Okuda K, Nakajima K, Saito H, Ito T, Kikuchi A, Yoneyama H, Shibutani T, Onoguchi M, Matsuo S, Hashimoto M, Kinuya S. P126Texture analysis of myocardial perfusion SPECT with a digital cardiac phantom. Eur Heart J Cardiovasc Imaging 2019. [DOI: 10.1093/ehjci/jez147.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- K Okuda
- Kanazawa Medical University, Physics, Ishikawa, Japan
| | - K Nakajima
- Kanazawa University Hospital, Nuclear Medicine, Kanazawa, Japan
| | - H Saito
- Kanazawa Medical University, Ishikawa, Japan
| | - T Ito
- Saiseikai Yokohamashi Tobu Hospital, Radiology, Yokohama, Japan
| | - A Kikuchi
- Hokkaido University of Science, Radiological Technology, Sapporo, Japan
| | - H Yoneyama
- Kanazawa University Hospital, Radiological Technology, Kanazawa, Japan
| | - T Shibutani
- Kanazawa University, Quantum Medical Technology, Kanazawa, Japan
| | - M Onoguchi
- Kanazawa University, Quantum Medical Technology, Kanazawa, Japan
| | - S Matsuo
- Kanazawa University Hospital, Nuclear Medicine, Kanazawa, Japan
| | - M Hashimoto
- Kanazawa Medical University, Physics, Ishikawa, Japan
| | - S Kinuya
- Kanazawa University Hospital, Nuclear Medicine, Kanazawa, Japan
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Yoneyama H, Usami Y, Harusawa S. Efficient Synthesis of a 5α-Reductase Inhibitor, 3-(Tetrazol-5-yl)-3,5-pregnadien-20-one through Allylic Rearrangement of Cyanophosphates. SYNTHESIS-STUTTGART 2019. [DOI: 10.1055/s-0037-1612060] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
We describe the use of allylic rearrangements of cyanophosphates for the efficient and practical synthesis of 3-(tetrazol-5-yl)-3,5-pregnadien-20-one, which is a potent 5α-reductase inhibitor (IC50: 15.6 nM), from pregnene-3,20-dione in 92% overall yield in four steps.
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14
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Usami Y, Sumimoto K, Kishima A, Tatsui Y, Yoneyama H, Harusawa S. Synthesis of Dihydropyrano[3,2- c]pyrazoles via Double Bond Migration and Ring-Closing Metathesis. Molecules 2019; 24:molecules24020296. [PMID: 30650589 PMCID: PMC6359453 DOI: 10.3390/molecules24020296] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2018] [Revised: 01/09/2019] [Accepted: 01/11/2019] [Indexed: 11/23/2022] Open
Abstract
Three types of pyrazole-fused heterobicycles, i.e., 1,5-, 1,7-, and 2,5-dihydropyrano[3,2-c]pyrazoles, were synthesized from 4-allyloxy-1H-pyrazoles. A sequence of the Claisen rearrangement of 4-allyloxy-1H-pyrazoles, ruthenium-hydride-catalyzed double bond migration, O-allylation, and ring-closing metathesis was employed in this study.
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Affiliation(s)
- Yoshihide Usami
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan.
| | - Kodai Sumimoto
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan.
| | - Azusa Kishima
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan.
| | - Yuya Tatsui
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan.
| | - Hiroki Yoneyama
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan.
| | - Shinya Harusawa
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan.
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15
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Komeda S, Yoneyama H, Uemura M, Tsuchiya T, Hoshiyama M, Sakazaki T, Hiramoto K, Harusawa S. Synthesis and structure-activity relationships of tetrazolato-bridged dinuclear platinum(II) complexes: A small modification at tetrazole C5 markedly influences the in vivo antitumor efficacy. J Inorg Biochem 2019; 192:82-86. [PMID: 30612029 DOI: 10.1016/j.jinorgbio.2018.12.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 12/17/2018] [Accepted: 12/21/2018] [Indexed: 02/04/2023]
Abstract
We synthesized and characterized 15 new derivatives of the highly anticancer-active platinum(II) complex [{cis-Pt(NH3)2}2(μ-OH)(μ-tetrazolato-N2,N3)]2+ (5-H-Y) by making substitutions at tetrazole C5. We then evaluated the comprehensive structure-cytotoxicity relationships of a total of 23 derivatives in two murine lymphocytic leukaemia cell lines, sensitive and resistant to cisplatin. We also report the in vivo antitumor efficacy of three ester derivatives, two of which exhibited much higher efficacy than oxaliplatin against mouse homografted Colon-26 colorectal tumor.
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Affiliation(s)
- Seiji Komeda
- Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka 513-8670, Japan.
| | - Hiroki Yoneyama
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan
| | - Masako Uemura
- Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka 513-8670, Japan
| | - Takahiro Tsuchiya
- Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka 513-8670, Japan
| | - Miyuu Hoshiyama
- Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka 513-8670, Japan
| | - Tomoya Sakazaki
- Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka 513-8670, Japan
| | - Keiichi Hiramoto
- Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka 513-8670, Japan
| | - Shinya Harusawa
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan.
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16
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Miura O, Ogake T, Yoneyama H, Kikuchi Y, Ohyama T. A strong structural correlation between short inverted repeat sequences and the polyadenylation signal in yeast and nucleosome exclusion by these inverted repeats. Curr Genet 2018; 65:575-590. [PMID: 30498953 PMCID: PMC6420913 DOI: 10.1007/s00294-018-0907-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 11/14/2018] [Accepted: 11/15/2018] [Indexed: 11/22/2022]
Abstract
DNA sequences that read the same from 5′ to 3′ in either strand are called inverted repeat sequences or simply IRs. They are found throughout a wide variety of genomes, from prokaryotes to eukaryotes. Despite extensive research, their in vivo functions, if any, remain unclear. Using Saccharomyces cerevisiae, we performed genome-wide analyses for the distribution, occurrence frequency, sequence characteristics and relevance to chromatin structure, for the IRs that reportedly have a cruciform-forming potential. Here, we provide the first comprehensive map of these IRs in the S. cerevisiae genome. The statistically significant enrichment of the IRs was found in the close vicinity of the DNA positions corresponding to polyadenylation [poly(A)] sites and ~ 30 to ~ 60 bp downstream of start codon-coding sites (referred to as ‘start codons’). In the former, ApT- or TpA-rich IRs and A-tract- or T-tract-rich IRs are enriched, while in the latter, different IRs are enriched. Furthermore, we found a strong structural correlation between the former IRs and the poly(A) signal. In the chromatin formed on the gene end regions, the majority of the IRs causes low nucleosome occupancy. The IRs in the region ~ 30 to ~ 60 bp downstream of start codons are located in the + 1 nucleosomes. In contrast, fewer IRs are present in the adjacent region downstream of start codons. The current study suggests that the IRs play similar roles in Escherichia coli and S. cerevisiae to regulate or complete transcription at the RNA level.
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Affiliation(s)
- Osamu Miura
- Department of Biology, Faculty of Education and Integrated Arts and Sciences, Waseda University, 2-2 Wakamatsu-cho, Shinjuku-ku, Tokyo, 162-8480, Japan
| | - Toshihiro Ogake
- Major in Integrative Bioscience and Biomedical Engineering, Graduate School of Science and Engineering, Waseda University, 2-2 Wakamatsu-cho, Shinjuku-ku, Tokyo, 162-8480, Japan
| | - Hiroki Yoneyama
- Major in Integrative Bioscience and Biomedical Engineering, Graduate School of Science and Engineering, Waseda University, 2-2 Wakamatsu-cho, Shinjuku-ku, Tokyo, 162-8480, Japan
| | - Yo Kikuchi
- Major in Integrative Bioscience and Biomedical Engineering, Graduate School of Science and Engineering, Waseda University, 2-2 Wakamatsu-cho, Shinjuku-ku, Tokyo, 162-8480, Japan
| | - Takashi Ohyama
- Department of Biology, Faculty of Education and Integrated Arts and Sciences, Waseda University, 2-2 Wakamatsu-cho, Shinjuku-ku, Tokyo, 162-8480, Japan. .,Major in Integrative Bioscience and Biomedical Engineering, Graduate School of Science and Engineering, Waseda University, 2-2 Wakamatsu-cho, Shinjuku-ku, Tokyo, 162-8480, Japan.
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17
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Niimi K, Usami K, Fujita Y, Abe M, Furukawa M, Suyama Y, Sakai Y, Kamioka M, Shibata N, Park EJ, Sato S, Kiyono H, Yoneyama H, Kitazawa H, Watanabe K, Nochi T, Aso H. Development of immune and microbial environments is independently regulated in the mammary gland. Mucosal Immunol 2018; 11:643-653. [PMID: 29346344 DOI: 10.1038/mi.2017.90] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Accepted: 09/21/2017] [Indexed: 02/04/2023]
Abstract
Breastfeeding is important for mammals, providing immunological and microbiological advantages to neonates, together with the nutritional supply from the mother. However, the mechanisms of this functional diversity in the mammary gland remain poorly characterized. Here, we show that, similar to the gastrointestinal tract, the mammary gland develops immune and microbial environments consisting of immunoglobulin A (IgA) and the microflora, respectively, both of which are important for protecting neonates and the mother from infectious diseases. The IgA production and microflora development are coordinated in the gastrointestinal tract but seem to be independently regulated in the mammary gland. In particular, the chemokine (C-C motif) ligand 28 and poly-Ig receptor, crucial molecules for the IgA production in milk, were expressed normally in germ-free lactating mice but were almost undetectable in postweaning mothers, regardless of the microflora presence. Our findings offer insights into potentially improving the quality of breastfeeding, using both immunological and microbiological approaches.
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Affiliation(s)
- K Niimi
- International Education and Research Center for Food and Agricultural Immunology, Graduate School of Agricultural Science, Tohoku University, Miyagi, Japan
| | - K Usami
- International Education and Research Center for Food and Agricultural Immunology, Graduate School of Agricultural Science, Tohoku University, Miyagi, Japan
| | - Y Fujita
- International Education and Research Center for Food and Agricultural Immunology, Graduate School of Agricultural Science, Tohoku University, Miyagi, Japan
| | - M Abe
- International Education and Research Center for Food and Agricultural Immunology, Graduate School of Agricultural Science, Tohoku University, Miyagi, Japan
| | - M Furukawa
- International Education and Research Center for Food and Agricultural Immunology, Graduate School of Agricultural Science, Tohoku University, Miyagi, Japan
| | - Y Suyama
- International Education and Research Center for Food and Agricultural Immunology, Graduate School of Agricultural Science, Tohoku University, Miyagi, Japan
| | - Y Sakai
- International Education and Research Center for Food and Agricultural Immunology, Graduate School of Agricultural Science, Tohoku University, Miyagi, Japan
| | - M Kamioka
- International Research and Development Center for Mucosal Vaccine, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - N Shibata
- International Research and Development Center for Mucosal Vaccine, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - E J Park
- International Research and Development Center for Mucosal Vaccine, Institute of Medical Science, University of Tokyo, Tokyo, Japan.,Department of Molecular Pathobiology and Cell Adhesion Biology, Graduate School of Medicine, Mie University, Mie, Japan
| | - S Sato
- International Research and Development Center for Mucosal Vaccine, Institute of Medical Science, University of Tokyo, Tokyo, Japan.,Mucosal Vaccine and Adjuvant Project, Research Institute for Microbial Diseases, Osaka University, Suita, Japan
| | - H Kiyono
- International Research and Development Center for Mucosal Vaccine, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - H Yoneyama
- International Education and Research Center for Food and Agricultural Immunology, Graduate School of Agricultural Science, Tohoku University, Miyagi, Japan
| | - H Kitazawa
- International Education and Research Center for Food and Agricultural Immunology, Graduate School of Agricultural Science, Tohoku University, Miyagi, Japan
| | - K Watanabe
- International Education and Research Center for Food and Agricultural Immunology, Graduate School of Agricultural Science, Tohoku University, Miyagi, Japan
| | - T Nochi
- International Education and Research Center for Food and Agricultural Immunology, Graduate School of Agricultural Science, Tohoku University, Miyagi, Japan.,International Research and Development Center for Mucosal Vaccine, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - H Aso
- International Education and Research Center for Food and Agricultural Immunology, Graduate School of Agricultural Science, Tohoku University, Miyagi, Japan
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18
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Usami Y, Kohno A, Yoneyama H, Harusawa S. Synthesis of Dihydrooxepino[3,2-c]Pyrazoles via Claisen Rearrangement and Ring-Closing Metathesis from 4-Allyloxy-1H-pyrazoles. Molecules 2018; 23:E592. [PMID: 29509713 PMCID: PMC6017168 DOI: 10.3390/molecules23030592] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 02/26/2018] [Accepted: 03/04/2018] [Indexed: 11/16/2022] Open
Abstract
Synthesis of novel pyrazole-fused heterocycles, i.e., dihydro-1H- or 2H-oxepino[3,2-c]pyrazoles (6 or 7) from 4-allyloxy-1H-pyrazoles (1) via combination of Claisen rearrangement and ring-closing metathesis (RCM) has been achieved. A suitable catalyst for the RCM of 5-allyl-4-allyloxy-1H-pyrazoles (4) was proved to be the Grubbs second generation catalyst (Grubbs2nd) to give the predicted RCM product at room temperature in three hours. The same reactions of the regioisomer, 3-allyl-4-allyloxy-1H-pyrazoles (5), also proceeded to give the corresponding RCM products. On the other hand, microwave aided RCM at 140 °C on both of 4 and 5 afforded mixtures of isomeric products with double bond rearrangement from normal RCM products in spite of remarkable reduction of the reaction time to 10 min.
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Affiliation(s)
- Yoshihide Usami
- Laboratory of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan.
| | - Aoi Kohno
- Laboratory of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan.
| | - Hiroki Yoneyama
- Laboratory of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan.
| | - Shinya Harusawa
- Laboratory of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan.
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19
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Harusawa S, Yoneyama H, Hikasa F, Fujisue D, Usami Y, Zhao ZY. Synthesis of Triazol Cn-Ribonucleoside Phosphoramidites Using β-Ribofuranosyl-Cn-acetylenes for RNA Catalysis Probing. HETEROCYCLES 2018. [DOI: 10.3987/com-17-13837] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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20
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Harusawa S, Yoneyama H. Tetrazole-Fragmentation for the Generation of Alkylidene Carbenes from Cyanophosphates under Neutral Conditions and Its Application to Organic Synthesis. HETEROCYCLES 2018. [DOI: 10.3987/rev-18-894] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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21
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Yoneyama H, Numata M, Uemura K, Usami Y, Harusawa S. Transformation of Carbonyl Compounds into Homologous Alkynes under Neutral Conditions: Fragmentation of Tetrazoles Derived from Cyanophosphates. J Org Chem 2017; 82:5538-5556. [PMID: 28470066 DOI: 10.1021/acs.joc.7b00346] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Cyanophosphates (CPs) can be easily prepared from either ketones or aldehydes, and their reaction with NaN3-Et3N·HCl results in the formation of azidotetrazoles. Under microwave irradiation, successive fragmentation of the azidotetrazoles generates alkylidene carbenes that undergo [1,2]-rearrangement and are transformed into homologous alkynes. Treatment of ketone-derived CPs with TMSN3 and Bu2SnO as catalyst in toluene at reflux directly yields the corresponding internal alkynes, whereas the reaction of aldehyde-derived CPs with NaN3-Et3N·HCl in THF at reflux or TMSN3-Bu2SnO (cat.) in toluene at reflux provides homologous terminal alkynes in good yields. These reactions take place under neutral conditions and can be successfully extended to obtain alkynes that are not usually accessible from the corresponding carbonyl compounds by the Ohira-Bestmann or Shioiri procedures, which require basic conditions.
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Affiliation(s)
- Hiroki Yoneyama
- Osaka University of Pharmaceutical Sciences , 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan
| | - Masahiro Numata
- Osaka University of Pharmaceutical Sciences , 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan
| | - Kenji Uemura
- Osaka University of Pharmaceutical Sciences , 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan
| | - Yoshihide Usami
- Osaka University of Pharmaceutical Sciences , 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan
| | - Shinya Harusawa
- Osaka University of Pharmaceutical Sciences , 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan
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22
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Komeda S, Yoneyama H, Uemura M, Muramatsu A, Okamoto N, Konishi H, Takahashi H, Takagi A, Fukuda W, Imanaka T, Kanbe T, Harusawa S, Yoshikawa Y, Yoshikawa K. Specific Conformational Change in Giant DNA Caused by Anticancer Tetrazolato-Bridged Dinuclear Platinum(II) Complexes: Middle-Length Alkyl Substituents Exhibit Minimum Effect. Inorg Chem 2017; 56:802-811. [PMID: 28045514 DOI: 10.1021/acs.inorgchem.6b02239] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Derivatives of the highly antitumor-active compound [{cis-Pt(NH3)2}2(μ-OH)(μ-tetrazolato-N2,N3)]2+ (5-H-Y), which is a tetrazolato-bridged dinuclear platinum(II) complex, were prepared by substituting a linear alkyl chain moiety at C5 of the tetrazolate ring. The general formula for the derivatives is [{cis-Pt(NH3)2}2(μ-OH)(μ-5-R-tetrazolato-N2,N3)]2+, where R is (CH2)nCH3 and n = 0 to 8 (complexes 1-9). The cytotoxicity of complexes 1-4 in NCI-H460 human non-small-cell lung cancer cells decreased with increasing alkyl chain length, and those of complexes 5-9 increased with increasing alkyl chain length. That is, the in vitro cytotoxicity of complexes 1-9 was found to have a U-shaped association with alkyl chain length. This U-shaped association is attributable to the degree of intracellular accumulation. Although circular dichroism spectroscopic measurement indicated that complexes 1-9 induced comparable conformational changes in the secondary structure of DNA, the tetrazolato-bridged complexes induced different degrees of DNA compaction as revealed by a single DNA measurement with fluorescence microsopy, which also had a U-shaped association with alkyl chain length that matched the association observed for cytotoxicity. Complexes 7-9, which had alkyl chains long enough to confer surfactant-like properties to the complex, induced DNA compaction 20 or 1000 times more efficiently than 5-H-Y or spermidine. A single DNA measurement with transmission electron microscopy revealed that complex 8 formed large spherical self-assembled structures that induced DNA compaction with extremely high efficiency. This result suggests that these structures may play a role in the DNA compaction that was induced by the complexes with the longer alkyl chains. The derivatization with a linear alkyl chain produced a series of complexes with unique cellular accumulation and DNA conformational change profiles and a potentially useful means of developing next-generation platinum-based anticancer drugs. In addition, the markedly high ability of these complexes to induce DNA compaction and their high intracellular accumulation emphasized the difference in mechanism of action from platinum-based anticancer drugs.
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Affiliation(s)
- Seiji Komeda
- Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science , Suzuka, Mie 513-8670, Japan
| | - Hiroki Yoneyama
- Faculty of Pharmaceutical Sciences, Osaka University of Pharmaceutical Sciences , Takatsuki, Osaka 569-1094, Japan
| | - Masako Uemura
- Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science , Suzuka, Mie 513-8670, Japan
| | - Akira Muramatsu
- Faculty of Life and Medical Sciences, Doshisha University , Kyotanabe, Kyoto 610-0394, Japan
| | - Naoto Okamoto
- Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science , Suzuka, Mie 513-8670, Japan
| | - Hiroaki Konishi
- Yakult Central Institute , Yakult Honsha Co., Ltd., Kunitachi, Tokyo 186-8650, Japan
| | - Hiroyuki Takahashi
- Pharmaceutical Research and Development Department, Yakult Honsha Co., Ltd. , Chuo, Tokyo 104-0061, Japan
| | - Akimitsu Takagi
- Yakult Central Institute , Yakult Honsha Co., Ltd., Kunitachi, Tokyo 186-8650, Japan
| | - Wakao Fukuda
- Department of Biotechnology, College of Life Sciences, Ritsumeikan University , Kusatsu, Shiga 525-8577, Japan
| | - Tadayuki Imanaka
- Department of Biotechnology, College of Life Sciences, Ritsumeikan University , Kusatsu, Shiga 525-8577, Japan
| | - Toshio Kanbe
- Laboratory of Medical Mycology, Research Institute for Disease Mechanism and Control, School of Medicine, Nagoya University , Nagoya 464-0064, Japan
| | - Shinya Harusawa
- Faculty of Pharmaceutical Sciences, Osaka University of Pharmaceutical Sciences , Takatsuki, Osaka 569-1094, Japan
| | - Yuko Yoshikawa
- Faculty of Life and Medical Sciences, Doshisha University , Kyotanabe, Kyoto 610-0394, Japan
| | - Kenichi Yoshikawa
- Faculty of Life and Medical Sciences, Doshisha University , Kyotanabe, Kyoto 610-0394, Japan
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23
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Yoneyama H, Yamamoto D, Yamatodani A, Harusawa S. Efficient Approaches to <i>S</i>-alkyl-<i>N</i>-alkylisothioureas and Application to Novel Histamine H<sub>3</sub>R Antagonists. YAKUGAKU ZASSHI 2016; 136:1217-32. [DOI: 10.1248/yakushi.16-00023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Hiroki Yoneyama
- Laboratory of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences
| | | | | | - Shinya Harusawa
- Laboratory of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences
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24
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Himoto T, Nomura T, Tani J, Miyoshi H, Morishita A, Yoneyama H, Masaki T. MON-PP063: Contribution of Selenium Deficiency to Insulin Resistance in Patients with HCV-Related Chronic Liver Disease. Clin Nutr 2015. [DOI: 10.1016/s0261-5614(15)30495-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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25
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Harusawa S, Yoneyama H, Magata T, Uemura K, Usami Y, Tanaka S, Takaoka M. Efficient Synthesis of N-[4-(4-Chlorophenyl)butyl]-S-(3-piperidinopropyl)isothiourea (OUP-186) and Its Analogues Using 2-Nitrophenylacetyl Isothiocyanate: Application to Novel Histamine H3R Antagonists. SYNTHESIS-STUTTGART 2015. [DOI: 10.1055/s-0034-1378699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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26
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Harusawa S, Yoneyama H, Magata T, Uemura K, Usami Y, Tanaka S, Takaoka M. Efficient Synthesis of N-[4-(4-Chlorophenyl)butyl]-S-(3-piperidinopropyl)isothiourea (OUP-186) and Its Analogues Using 2-Nitrophenylacetyl Isothiocyanate: Application to Novel Histamine H3R Antagonists. SYNTHESIS-STUTTGART 2015. [DOI: 10.1055/s-0034-1380345] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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27
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Harusawa S, Yoneyama H, Usami Y, Yamamoto D, Zhao ZY. Synthesis of C4-Linked C0- and C2-Imidazole 2′-Deoxyribonucleoside Phosphoramidites and Imidazole Base-Pairing Effects on DNA. SYNTHESIS-STUTTGART 2014. [DOI: 10.1055/s-0034-1378669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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28
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Harusawa S, Yoneyama H, Usami Y, Yamamoto D, Zhao ZY. Synthesis of C4-Linked C0- and C2-Imidazole 2′-Deoxyribonucleoside Phosphoramidites and Imidazole Base-Pairing Effects on DNA. SYNTHESIS-STUTTGART 2014. [DOI: 10.1055/s-0034-1378451] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Shinya Harusawa
- Laboratory of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences
| | - Hiroki Yoneyama
- Laboratory of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences
| | - Yoshihide Usami
- Laboratory of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences
| | | | - Zheng-yun Zhao
- Centre for Plant Science & Bio-polymer Research, Faculty of Engineering, Computing and Creative Industries, Edinburgh Napier University
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29
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Mizuki K, Iwahashi K, Murata N, Ikeda M, Nakai Y, Yoneyama H, Harusawa S, Usami Y. Synthesis of marine natural product (-)-pericosine E. Org Lett 2014; 16:3760-3. [PMID: 24991702 DOI: 10.1021/ol501631r] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The first synthesis of (-)-pericosine E (6), a metabolite of the Periconia byssoides OUPS-N133 isolated originally from the sea hare Aplysia kurodai, has been achieved. Efficient and regioselective synthetic procedures for the synthesis of key intermediates, anti- and syn-epoxides 9 and 10, were developed using an anti-epoxidation of diene 12 with TFDO and a bromohydrination of 12 with NBS in CH(3)CN/H(2)O (2:3), respectively. In addition, comparison of the specific optical rotations between synthetic 6 and natural 6 elucidated that the naturally preferred enantiomer of pericosine E had the same absolute configuration as (-)-6 synthesized from chlorohydrin (-)-8 and anti-epoxide (+)-9.
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Affiliation(s)
- Koji Mizuki
- Laboratory of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences , 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan
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Usami Y, Mizuki K, Yoneshige Y, Kawahata R, Yoneyama H, Harusawa S. Microwave-Aided One-Pot Dehydration of the Alcohol Derived from (−)-Shikimic Acid for Efficient Synthesis of Pericosines. HETEROCYCLES 2014. [DOI: 10.3987/com-14-13053] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Harusawa S, Sawada K, Magata T, Yoneyama H, Araki L, Usami Y, Hatano K, Yamamoto K, Yamamoto D, Yamatodani A. Synthesis and evaluation of N-alkyl-S-[3-(piperidin-1-yl)propyl]isothioureas: High affinity and human/rat species-selective histamine H3 receptor antagonists. Bioorg Med Chem Lett 2013; 23:6415-20. [DOI: 10.1016/j.bmcl.2013.09.052] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2013] [Revised: 09/11/2013] [Accepted: 09/17/2013] [Indexed: 10/26/2022]
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Akiba K, Ando T, Isogai E, Nakae T, Yoneyama H. Tat pathway-mediated translocation of the Sec pathway substrate OprM, an outer membrane subunit of the resistance nodulation division xenobiotic extrusion pumps, in Pseudomonas Aeruginosa. Chemotherapy 2013; 59:129-37. [PMID: 24051688 DOI: 10.1159/000353894] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2012] [Accepted: 06/19/2013] [Indexed: 11/19/2022]
Abstract
BACKGROUND Pseudomonas aeruginosa produces the Sec and Tat protein secretion machineries. The latter appears to be involved in the secretion of virulence factors, including phospholipase C (PlcH), and hence is a potential target of chemotherapeutic agents. METHODS The signal sequence of OprM, the outer membrane subunit of the xenobiotic extrusion pumps, was substituted with that of PlcH. The antibiotic susceptibility of oprM-deficient cells expressing the hybrid protein PlcH-OprM was evaluated using the agar dilution method. RESULTS The PlcH-OprM-expressing cells showed resistance to various MexAB-OprM substrate antibiotics. To evaluate the translocation route of PlcH-OprM, tatC encoding an indispensable component of the Tat machinery was knocked out in oprM-deficient cells. The tatC-oprM double mutant expressing PlcH-OprM exhibited antibiotic hypersusceptibility like the oprM-deficient cells, indicating that PlcH-OprM was translocated across the inner membrane exclusively through the Tat system. CONCLUSIONS This system can be used for the screening of Tat system inhibitors and will be an excellent model for the study of secretion and biogenesis of the β-barrel outer membrane proteins.
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Affiliation(s)
- K Akiba
- Laboratory of Animal Microbiology, Department of Microbial Biotechnology, Graduate School of Agricultural Science, Tohoku University, Sendai, Japan
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Usami Y, Watanabe R, Fujino Y, Shibano M, Ishida C, Yoneyama H, Harusawa S, Ichikawa H. Divergent synthesis and evaluation of inhibitory activities against cyclooxygenases-1 and -2 of natural withasomnines and analogues. Chem Pharm Bull (Tokyo) 2013. [PMID: 23207635 DOI: 10.1248/cpb.c12-00725] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The divergent synthesis of natural withasomnines and analogues was achieved from 4-hydroxypyrazoles, which was prepared via alkaline hydrolysis of the Baeyer-Villiger oxidation products from 4-formylpyrazoles. Key steps of this synthesis are regioselective Claisen rearrangement of 4-allyloxypyrazoles and the Suzuki-Miyaura coupling of 5,6-dihydro-4H-pyrrolo[1,2-b]pyrazol-3-yl trifluoromethanesulfonate and commercially available arylboronic acids. The Suzuki-Miyaura coupling at the final step of this strategy enabled facile access to natural withasomnines and their analogues. The biological activities of the twelve synthesized compounds against cyclooxygenases-1 and -2 (COX-1 and COX-2) were evaluated.
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Affiliation(s)
- Yoshihide Usami
- Laboratory of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, Osaka University of Pharmaceutical Sciences; 4–20–1 Nasahara, Takatsuki, Osaka 569–1094, Japan.
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Harusawa S, Yoneyama H, Usami Y, Komeda S. Efficient Transformation of Inactive Nitriles into 5-Substituted 1H-Tetrazoles Using Microwave Irradiation and Their Applications. SYNTHESIS-STUTTGART 2013. [DOI: 10.1055/s-0032-1318476] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
| | | | | | - Seiji Komeda
- Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science
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Yoneyama H, Yamashita M, Kasai S, Kawase K, Ueno R, Ito H, Ouchi T. Terahertz spectroscopy of native-conformation and thermally denatured bovine serum albumin (BSA). Phys Med Biol 2008; 53:3543-9. [DOI: 10.1088/0031-9155/53/13/010] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Yoneyama H, Shimoda A, Araki L, Hatano K, Sakamoto Y, Kurihara T, Yamatodani A, Harusawa S. Efficient Approaches to S-Alkyl-N-alkylisothioureas: Syntheses of Histamine H3 Antagonist Clobenpropit and Its Analogues. J Org Chem 2008; 73:2096-104. [DOI: 10.1021/jo702181x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hiroki Yoneyama
- Osaka University of Pharmaceutical Sciences, 4-20-1, Nasahara, Takatsuki, Osaka 569-1094, Japan, Alfresa Pharma Co., 2-24-3, Sho, Ibaraki, Osaka 567-0806, Japan, and Department of Bioinformatics, Graduate School of Allied Health Sciences, Faculty of Medicine, Osaka University, Osaka 565-0871, Japan
| | - Ayako Shimoda
- Osaka University of Pharmaceutical Sciences, 4-20-1, Nasahara, Takatsuki, Osaka 569-1094, Japan, Alfresa Pharma Co., 2-24-3, Sho, Ibaraki, Osaka 567-0806, Japan, and Department of Bioinformatics, Graduate School of Allied Health Sciences, Faculty of Medicine, Osaka University, Osaka 565-0871, Japan
| | - Lisa Araki
- Osaka University of Pharmaceutical Sciences, 4-20-1, Nasahara, Takatsuki, Osaka 569-1094, Japan, Alfresa Pharma Co., 2-24-3, Sho, Ibaraki, Osaka 567-0806, Japan, and Department of Bioinformatics, Graduate School of Allied Health Sciences, Faculty of Medicine, Osaka University, Osaka 565-0871, Japan
| | - Kouta Hatano
- Osaka University of Pharmaceutical Sciences, 4-20-1, Nasahara, Takatsuki, Osaka 569-1094, Japan, Alfresa Pharma Co., 2-24-3, Sho, Ibaraki, Osaka 567-0806, Japan, and Department of Bioinformatics, Graduate School of Allied Health Sciences, Faculty of Medicine, Osaka University, Osaka 565-0871, Japan
| | - Yasuhiko Sakamoto
- Osaka University of Pharmaceutical Sciences, 4-20-1, Nasahara, Takatsuki, Osaka 569-1094, Japan, Alfresa Pharma Co., 2-24-3, Sho, Ibaraki, Osaka 567-0806, Japan, and Department of Bioinformatics, Graduate School of Allied Health Sciences, Faculty of Medicine, Osaka University, Osaka 565-0871, Japan
| | - Takushi Kurihara
- Osaka University of Pharmaceutical Sciences, 4-20-1, Nasahara, Takatsuki, Osaka 569-1094, Japan, Alfresa Pharma Co., 2-24-3, Sho, Ibaraki, Osaka 567-0806, Japan, and Department of Bioinformatics, Graduate School of Allied Health Sciences, Faculty of Medicine, Osaka University, Osaka 565-0871, Japan
| | - Atsushi Yamatodani
- Osaka University of Pharmaceutical Sciences, 4-20-1, Nasahara, Takatsuki, Osaka 569-1094, Japan, Alfresa Pharma Co., 2-24-3, Sho, Ibaraki, Osaka 567-0806, Japan, and Department of Bioinformatics, Graduate School of Allied Health Sciences, Faculty of Medicine, Osaka University, Osaka 565-0871, Japan
| | - Shinya Harusawa
- Osaka University of Pharmaceutical Sciences, 4-20-1, Nasahara, Takatsuki, Osaka 569-1094, Japan, Alfresa Pharma Co., 2-24-3, Sho, Ibaraki, Osaka 567-0806, Japan, and Department of Bioinformatics, Graduate School of Allied Health Sciences, Faculty of Medicine, Osaka University, Osaka 565-0871, Japan
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Yoneyama H, Yamashita M, Kasai S, Ito H, Ouchi T. Utility of micro-filter membrane in THz spectrum of molecules in solution. ACTA ACUST UNITED AC 2008. [DOI: 10.1117/12.760850] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Yoneyama H, Niki Y, Matsushima T. P2015 Evaluation of clinical dosage of gatifioxacin for respiratory tract infections in elderly patients. Int J Antimicrob Agents 2007. [DOI: 10.1016/s0924-8579(07)71854-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Harusawa S, Kawamura M, Araki L, Taniguchi R, Yoneyama H, Sakamoto Y, Kaneko N, Nakao Y, Hatano K, Fujita T, Yamamoto R, Kurihara T, Yamatodani A. Synthesis of Novel 4(5)-(5-Aminotetrahydropyran-2-yl)imidazole Derivatives and Their in Vivo Release of Neuronal Histamine Measured by Brain Microdialysis. Chem Pharm Bull (Tokyo) 2007; 55:1245-53. [PMID: 17666853 DOI: 10.1248/cpb.55.1245] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The (2R,5S)-trans- and (2S,5S)-cis-stereoisomers 1a and 1b of 4(5)-(5-aminotetrahydropyran-2-yl)imidazole, which have two chiral centers and adopt a stable chair conformation, were synthesized via cyclization of diol intermediates 7 using L-glutamine as the starting material. Their enantiomers, (2S,5R)-trans-1c and (2R,5R)-cis-1d, were synthesized by the same methodology from D-glutamine. Stereo isomers 1a-d were converted into cyanoguanidines 11a-d, and into N-isopropyl and N-3,3-dimethylbutyl derivatives 12a-d and 13a-d, respectively. The results of in vivo brain microdialysis of the derivatives apparently indicated that only (2S,5R)-isomers increased the release of neuronal histamine. Among the many (2S,5R)-N-alkyl derivatives, 13c (OUP-133) and 18 (OUP-153) increased histamine release to 180-190% and 180-200% of basal levels, respectively, and were found to be novel histamine H(3) antagonists.
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Affiliation(s)
- Shinya Harusawa
- Osaka University of Pharmaceutical Sciences, Nasahara, Takatsuki, Osaka, Japan.
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Nakatsu T, Uchida N, Ogawa M, Muramatsu A, Morishita A, Yoneyama H, Nomura K, Sokabe T, Masaki T, Kuriyama S. Newly developed endotriptor for patients with basket impaction in the distal common bile duct. Endoscopy 2006; 38:433. [PMID: 16680655 DOI: 10.1055/s-2006-925162] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Affiliation(s)
- T Nakatsu
- Dept. of Gastroenterology, St. Martin Hospital, Ikenobe, Kagawa, Japan
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Masuoka F, Ooba K, Sasaki H, Endo H, Chiba S, Maeda K, Yoneyama H, Niikura I, Kashiwaba Y. Applicability of ZnO single crystals for ultraviolet sensors. ACTA ACUST UNITED AC 2006. [DOI: 10.1002/pssc.200564753] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Ogawa M, Nakatsu T, Masaki T, Morishita A, Muramatsu A, Yoneyama H, Uchida N, Kuriyama S. A novel "stylet" device for facilitating the advancement of a colonoscope. Endoscopy 2006; 38:195. [PMID: 16479430 DOI: 10.1055/s-2006-925147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Affiliation(s)
- M Ogawa
- Third Department of Internal Medicine, Kagawa University School of Medicine, Kagawa, Japan
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Masaki T, Igarashi K, Tokuda M, Yukimasa S, Han F, Jin YJ, Li JQ, Yoneyama H, Uchida N, Fujita J, Yoshiji H, Watanabe S, Kurokohchi K, Kuriyama S. pp60c-src activation in lung adenocarcinoma. Eur J Cancer 2003; 39:1447-55. [PMID: 12826049 DOI: 10.1016/s0959-8049(03)00276-4] [Citation(s) in RCA: 85] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Nine src family members are known including c-Src, c-Yes, c-Lck, c-Fyn, c-Hck, c-Lyn, c-Blk, c-Fgr and c-Yrk. They encode proteins with molecular weights of 55-62 kilodaltons (kDa), which are either cytoplasmic or membrane-associated protein tyrosine kinases. A close correlation exists between an elevated pp60c-src tyrosine kinase activity and cell transformation. However, the level of activation of pp60c-src in non-small cell lung cancers (NSCLC) remains obscure. The aim of this study was to examine the level of activity of pp60c-src in NSCLC. pp60c-src expression and in vitro protein tyrosine kinase activity in lung cancer tissue samples were measured by western blotting and in vitro kinase assays and compared with those in the surrounding non-tumour lung tissue from the same patient. pp60c-src phosphorylation was assessed by two-dimensional tryptic phosphopeptide mapping. The kinase activity of pp60c-src was significantly activated in NSCLC, especially in adenocarcinomas. In addition, the pp60c-src kinase activity increased with the size of the adenocarcinoma. Two-dimensional tryptic phosphopeptide mapping showed dephosphorylation of pp60c-src at Tyr 530 in adenocarcinomas. The proto-oncogene product, pp60c-src, was activated in NSCLC, especially in adenocarcinomas, in part through the dephosphorylation of Tyr 530. Our results suggest that activation of pp60c-src might play an important role in the progression of lung adenocarcinomas.
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Affiliation(s)
- T Masaki
- Third Department of Internal Medicine, Kagawa Medical University, 1750-1 Ikenobe Miki-cho, Kagawa 761-0793, Japan
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Abstract
When l-arginine is depleted, neuronal nitric oxide synthase (nNOS) has been reported to generate superoxide. A flavoprotein module construct of nNOS has been demonstrated to be sufficient for superoxide production. In contrast, nNOS was reported not to be involved in superoxide formation, because such formation occurred with a mixture of the boiled enzyme and redox-active cofactors. We aimed to resolve these controversial issues by examining superoxide generation, without the addition of redox-active cofactors, by recombinant wild-type nNOS and by C415A-nNOS, which has a mutation in the haem proximal site. In a superoxide-sensitive adrenochrome assay, the initial lag period of C415A-nNOS was increased 2-fold compared with that of native nNOS. With ESR using the spin trap 5,5-dimethyl-1-pyrroline-N-oxide, prominent signals of the superoxide adduct were obtained with wild-type nNOS, whereas an enzyme preparation boiled for 5 min did not produce superoxide. Higher concentrations of NaCN (10 mM) decreased superoxide formation by 63%. Although the activity of the reductase domain was intact, superoxide generation from C415A-nNOS was decreased markedly, to only 10% of that of the wild-type enzyme. These results demonstrate that nNOS truly catalyses superoxide formation, that this involves the oxygenase domain, and that full-length nNOS hinders the reductase domain from producing superoxide.
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Affiliation(s)
- H Yoneyama
- The Second Department of Physiology, Kagawa Medical University, Miki-cho, Kita-gun, Kagawa 761-0793, Japan
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Rahma M, Kimura S, Yoneyama H, Kosaka H, Nishiyama A, Fukui T, Abe Y. Effects of furosemide on the tubular reabsorption of nitrates in anesthetized dogs. Eur J Pharmacol 2001; 428:113-9. [PMID: 11779027 DOI: 10.1016/s0014-2999(01)01357-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The present study was performed to determine the tubular sites of nitrite and nitrate (NO) reabsorption and the effects of furosemide on the renal handling of NOx in anesthetized dogs, using renal clearance and stop-flow methods. Furosemide (2 mg/kg, i.v.) increased the urinary excretion rates of Na+ (U(Na+)V) and NOx (U(NOx)V) with a reduction of tubular reabsorption rates of Na+ and NOx. During inhibition of renal nitric oxide (NO) synthesis by an intrarenal infusion of L-nitro arginine (30 microg/kg-min), furosemide also increased U(NOx)V and decreased tubular reabsorption rate of NOx from 96.5+/-0.8% to 86.6+/-1.7%. An intravenous infusion of 10% mannitol (0.5 ml/kg-min) also increased both U(Na+)V and U(NOx)V. In addition, after furosemide administration or mannitol infusion. U(NOx)V was correlated with U(Na+)V. In stop-flow experiments, the distal dip in NOx curve was observed and the site of the dip in NOx curve was identical to that of Na+ curve. Furosemide shifted upward the U/P(Na+)/U/P(Cr) and U/P(NOx)/U/P(Cr) at the distal dip, indicating inhibition of Na+ and NOx reabsorption at distal tubules. These results indicate that more than 96% of the filtered NOx is reabsorbed in the renal tubules, and that the tubular handling of NOx is very close to that of Na+. In addition, the stop-flow experiments demonstrate that furosemide inhibited the reabsorption of NOx as well as Na+ at the distal tubule.
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Affiliation(s)
- M Rahma
- Department of Pharmacology, Kagawa Medical University, Japan.
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Kobashi Y, Ohba H, Yoneyama H, Okimoto N, Matsushima T, Soejima R. [Clinical analysis of patients with community-acquired pneumonia caused by a mixed infection of polymicrobial agents--including a comparative study of an infectious group with monomicrobial agents and an infectious group with unknown agents]. ACTA ACUST UNITED AC 2001; 75:283-90. [PMID: 11357318 DOI: 10.11150/kansenshogakuzasshi1970.75.283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
We clinically analyzed 83 patients with community-acquired pneumonia caused by a mixed infection of polymicrobial agents who we have treated during the past 15 years. A comparative study among three groups; an infectious group with polymicrobial agents (83 cases), an infectious group with monomicrobial agents (335 cases), and an infectious group with unknown agents (599 cases) was performed. The results were as follows; (1) The highest percentage of patients were elderly and bedridden. (2) Striking atypical pneumonic symptoms, including dyspnea, consciousness disturbance, gastrointestinal symptoms and hypotension (shock) were present. (3) Laboratory findings of poor nutritional conditions, including decreases in serum protein, albumin, and cholineesterase, and hypoxia remarkably increased. (4) The prognosis was poor because the mortality rate (15.7%) was higher. (5) There were two polymicrobial agents for 75 patients and three agents for 8 patients. The coupling of polymicrobial agents was most frequent in five patients with Haemophilus influenzae + MSSA and five with H. influenzae + respiratory virus. These results suggest that the patients with community-acquired pneumonia caused by a mixed infection of polymicrobial agents had clinical features and causative microorganisms resembling those of elderly patients with community-acquired pneumonia. We recommended that treatment with antibiotics for them was adequate if the treatment resemble that of elderly patients.
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Affiliation(s)
- Y Kobashi
- Division of Respiratory Diseases, Department of Medicine, Kawasaki Medical School Kawasaki Hospital, Nakasange 2-1-80, Okayama 700-8505, Japan
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Kobashi Y, Ohba H, Yoneyama H, Okimoto N, Matsushima T, Soejima R. [Clinical analysis of patients with community-acquired pneumonia requiring hospitalization classified by age group]. Kansenshogaku Zasshi 2001; 75:193-200. [PMID: 11321779 DOI: 10.11150/kansenshogakuzasshi1970.75.193] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
We classified 1017 patients with community-acquired pneumonia requiring hospitalization experienced in Kawasaki Medical School Kawasaki Hospital during the past 15 years into five age groups (< or = 54 years old, 55-64 years old, 65-74 years old, 75-84 years old, > or = 85 years old). With particular emphasis on the elderly patients, we then compared the clinical and microbiological findings in the five groups. The results were as follows; (1) Half of patients in the over 85 years old group were bed-ridden. (2) The proportion receiving antibiotics before hospitalization decreased with age. (3) There were striking atypical pneumonic symptoms, such as dyspnea and consciousness disturbance in the two age groups over 75 years old. (4) Hypotension (shock) increased with age. (5) Markers of nutritional conditions, such as serum protein, albumin, cholinesterase, and hypoxia remarkably increased in the two age groups over 75 years old. (6) There were no significant differences in the isolation rate of etiological microorganisms. (7) The number of polymicrobial agents in the < or = 54 years old group was lower than that in the other age groups. (8) Mycoplasma pneumoniae was most significantly higher in < or = 54 years old group, Haemophilus influenzae in patients 55-64 years old, and Streptococcus pneumoniae in both 65-74 and 75-84 years old groups. (9) The isolation rate of MSSA, gram-negative bacilli such as Klebsiella pneumoniae, Pseudomonas aeruginosa, respiratory viruses increased with age. (10) The amount of sepsis increased with age. (11) The prognosis was poor in the two groups over 75 years old because the mortality rate (over 10%) was higher that for the other age groups.
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Affiliation(s)
- Y Kobashi
- Division of Respiratory Diseases, Department of Medicine, Kawasaki Medical School Kawasaki Hospital, Nakasange 2-1-80, Okayama 700-8505, Japan
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Zhou MS, Kosaka H, Tian RX, Abe Y, Chen QH, Yoneyama H, Yamamoto A, Zhang L. L-Arginine improves endothelial function in renal artery of hypertensive Dahl rats. J Hypertens 2001; 19:421-9. [PMID: 11288812 DOI: 10.1097/00004872-200103000-00010] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVES To clarify whether endothelium-derived contracting factor (EDCF) is developed in renal artery of hypertensive Dahl rats and whether prolonged oral L-arginine treatments prevent development of EDCF and hypertension. DESIGN The effect of prolonged salt treatment with or without L-arginine on the renal artery was examined. METHODS AND RESULTS Dahl salt-sensitive and -resistant rats were fed a 0.4 or an 8% NaCl diet for 4 weeks. High sodium intake increased arterial pressure in Dahl salt-sensitive rats. The rings of renal arteries were suspended for isometric tension recording. Only in the hypertensive rats, more than 1 micromol/l acetylcholine induced an endothelium-dependent contraction response. The contraction was completely inhibited by indomethacin or ONO-3708 [prostaglandin H2 (PGH2)/thromboxane A2 (TXA2) receptor antagonist], and partially inhibited by OKY-046 (TXA2 synthetase inhibitor). Acetylcholine-induced relaxation was significantly depressed in hypertensive rats, which was partially improved by SQ29548 (PGH2/TXA2 receptor antagonist). Oral L-arginine, but not ONO-8809 (orally active PGH2/TXA2 receptor antagonist) treatment, inhibited the contraction and amended the relaxation. The endothelium-independent contraction to TXA2 receptor agonist U46619 and relaxation to nitroprusside were not altered by L-arginine treatment The L-Arginine treatment reduced blood pressure and sodium retention with increases in urinary NO2-/NO3- and cGMP excretion. Hydralazine treatment also inhibited development of EDCF. CONCLUSIONS The present results suggest that impaired endothelium-dependent relaxation to acetylcholine is caused in part by induction of EDCF synthesis/release in renal arteries of hypertensive Dahl rats. L-arginine can attenuate sodium retention and development of hypertension, which lead to a decrease in EDCF synthesis in renal arteries.
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Affiliation(s)
- M S Zhou
- The Second Department of Physiology, Kagawa Medical University, Japan
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Kawasaki S, Takizawa H, Yoneyama H, Nakayama T, Fujisawa R, Izumizaki M, Imai T, Yoshie O, Homma I, Yamamoto K, Matsushima K. Intervention of thymus and activation-regulated chemokine attenuates the development of allergic airway inflammation and hyperresponsiveness in mice. J Immunol 2001; 166:2055-62. [PMID: 11160256 DOI: 10.4049/jimmunol.166.3.2055] [Citation(s) in RCA: 206] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Thymus- and activation-regulated chemokine (TARC; CCL17) is a lymphocyte-directed CC chemokine that specifically chemoattracts CC chemokine receptor 4-positive (CCR4(+)) Th2 cells. To establish the pathophysiological roles of TARC in vivo, we investigated here whether an mAb against TARC could inhibit the induction of asthmatic reaction in mice elicited by OVA. TARC was constitutively expressed in the lung and was up-regulated in allergic inflammation. The specific Ab against TARC attenuated OVA-induced airway eosinophilia and diminished the degree of airway hyperresponsiveness with a concomitant decrease in Th2 cytokine levels. Our results for the first time indicate that TARC is a pivotal chemokine for the development of Th2-dominated experimental allergen-induced asthma with eosinophilia and AHR. This study also represents the first success in controlling Th2 cytokine production in vivo by targeting a chemokine.
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Affiliation(s)
- S Kawasaki
- Department of Respiratory Medicine, School of Medicine, University of Tokyo, Tokyo, Japan
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